Harness for upper extremity below-elbow prosthesis

Abstract

A harness for an upper extremity below-elbow prosthesis. The harness includes a humeral cuff having medial and lateral pivot arms configured to removably attach to the socket of a below-elbow prosthesis. The humeral cuff enables a user to suspend the prosthesis without the need of a shoulder strap / harness or body harness. A cable system is affixed to the pivot arms and includes a wheel coupling the pivot arms to the control arm of a hook of the below-elbow prosthesis, thereby enabling users to operate the hook by simple flexion and extension of their arm.

Description

BACKGROUND OF THE INVENTION[0001]The present invention relates to upper extremity below-elbow prostheses. More specifically, the present invention relates to a harness for an upper extremity below-elbow prosthesis capable of suspending a below-elbow prosthesis and facilitating its operation without the need of a shoulder strap / harness or body harness.[0002]The majority of below-elbow amputees utilize mechanical or body-powered prosthesis that are suspended on an amputee's body via a harness that is fastened around the amputee's shoulder or upper torso. The prosthesis is controlled by upper body movements that utilize a cable connected to the harness at one end, and to a mechanical hand, hook, or elbow at the other end. Although, these harness systems provide ways in which an amputee may employ a prosthesis, they generally lack the range of motion necessary for adequate flexion and extension of a user's arm with the prosthesis. Moreover, when opening the hook of the prosthesis, these...

AI Technical Summary

Benefits of technology

The present invention provides a harness for an upper extremity below-elbow prosthesis that is designed to make life easier for users with this type of prosthesis. The harness comprises a humeral cuff, medial and lateral pivot arms, a cable system and a wheel. The cable system is connected to a control arm of a hook of a below-elbow prosthesis and exerts tension on it as it is extended, automatically opening the hook. The wheel ensures even tension on both the medial and lateral arms. This harness is designed to improve the user experience with below-elbow prosthesis.

Problems solved by technology

Although, these harness systems provide ways in which an amputee may employ a prosthesis, they generally lack the range of motion necessary for adequate flexion and extension of a user's arm with the prosthesis.

Further, these shoulder harness systems are overall uncomfortable in that they give a user a feeling of confinement and are cumbersome to wear whether over or underneath a user's shirt.

While these devices fulfill their respective, particular objectives and requirements, the aforementioned patents do not disclose a harness for an upper extremity below-elbow prosthesis having a humeral cuff, medial and lateral pivot arms having upper and lower members pivotally attached to one another; a cable system having a first cable, a second cable, a medial cable anchor, a lateral cable anchor, and a wheel having a central cable anchor.

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